Serge NOEL
267 lines
12 KiB
Plaintext
267 lines
12 KiB
Plaintext
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<title>JMRI: UP-2008 Signaling Definition</title>
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<h1>JMRI: UP-2008 Signalling Definition</h1>
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This system contains signalling definitions corresponding to the Union Pacific Railroad rules
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effective November 2008 as described by Joseph Hoevet.
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<p>Signal aspects can be referenced here:-</p>
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<p><a href="http://signals.jovet.net/rules/UPRR%20Signal%20Rules.pdf">Union Pacific Railroad - Signal Rules</a>.</p>
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<p>An additional mast has been included from the February 2012 rule book which includes the
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new Approach Restricting aspect with yellow over flashing red. This mast brings the system up
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to the 2012 specification.</p>
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<p>Not all of the possible masts have been defined but there is a varied selection here that
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should cover most requirements. Due to the nature of this being a simplified prototype system
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it is not always easy to display all the possible variations of the same aspect on a mast and
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this should not be necessary in most cases. Where a mast can display different variations of
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an aspect (e.g. Approach Diverging, Diverging Clear, Diverging Advance Approach or Diverging
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Approach) the lower aspect will apply to any diverging route with a slow speed restriction.
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Slow speed means the same as Limited speed and is merely used to force the lower head aspect
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display and is not an official speed designation</p>
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<p>It is assumed that searchlight heads can only display a maximum of three different colors
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on an individual head. No 'Darth Vader' style multi-lamp masts have been included - if a
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Darth Vader style mast with more than three colors on a head is required a new mast will need
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to be defined.</p>
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<p>No one searchlight mast can display all of the available aspects so check carefully which
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aspects you require before choosing a mast.</p>
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<p>Some aspect sequences can be controlled by setting appropriate speeds on blocks. A 'Sixty'
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speed block will cause a signal to be proceeded by an Approach 60 indication in most cases, a
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'Fifty' speed block Approach 50 and a 'Limited' or 'Slow' speed block Approach Limited. A
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Slow speed block on a divergance will force the lower head to display Approach Diverging,
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Diverging Approach, Diverging Advance Approach and Diverging Clear indications on the lower
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head of a triple head mast instead of the centre head where available, and a Restricting
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speed block will force a restricting or Restricting (Diverging) and Approach Restricting
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indications where possible.</p>
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<p>An additional non-flashing icon set has been provided for where the flashing icons cause
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display problems. Choosing the non flashing representations does not affect the aspect
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displayed on the physical signal. Right click on the signal icon when editing the panel to
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select the 'noflash' alternate icon set for that signal.</p>
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<p>An additional shaped icon set has been provided to be readable by those with color
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impaired vision and for printing in black and white. Right click on the signal icon when
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editing the panel to select the 'shaped' alternate icon set for that signal.</p>
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<p>Some indications appear in the aspects list several times. In this case there is a
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seperate entry for each of the possible prescribed speeds that the aspect may apply to in
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order to get the preceeding signal to display the correct approach aspect. On a diverging
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route the signal aspect may be determined by the state of a signal some distance ahead and
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not just the next signal.</p>
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<p>Track speeds used in this system are Sixty = 60 MPH, Fifty = 50MPH, Limited = 40 MPH, Slow
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= Officially the same as Limited but needs to be set at least 1MPH slower and Restricted =
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Restricted speed. Use Slow speed where a diverging route is the secondary diverging route to
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force the correct aspects to be displayed where alternative diverging aspects are available
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on a triple head mast.</p>
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<p>Typical sequences of aspects shown by this signal system :-</p>
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<p>Searchlight signals leading through a consecutive divergance. The fourth signal is located
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at the first divergance:</p>
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<p><img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.4-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-3-high/rule-9.2.5-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-3-high/rule-9.2.12-a.gif" alt=
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""> <img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-2-high/rule-9.2.9-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt=
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""></p>
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<p>Searchlight signals leading through a single secondary divergance. The approach signal can
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be triple head as shown here to give advance route indication to the secondary divergance. In
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this instance the approach signals are shown as automatic block signals:</p>
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<p><img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-s.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.4-s.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-3-high/rule-9.2.5-t.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-3-high/rule-9.2.9-b.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt=
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""></p>
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<p>Searchlight signals leading through a single divergance. When there is only one diverging
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route available double head signal masts can be used:</p>
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<p><img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.4-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-2-high/rule-9.2.5-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-2-high/rule-9.2.9-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt=
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""></p>
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<p>Searchlight signals with Lunar aspects leading to a restricted siding:</p>
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<p><img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-2-high/rule-9.2.7-a.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-2-high/rule-9.2.13-c.gif" alt=
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""></p>
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<p>Automatic block searchlight signals leading to an occupied block:</p>
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<p><img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.1-s.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.4-s.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.6-s.gif" alt="">
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<img src=
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"../../../resources/icons/smallschematics/aspects/UP-2008/SL-1-high/rule-9.2.14-s.gif" alt=
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""></p>
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<p>Triple head absolute masts will typically only be required at the entrance to a complex
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interlocking with multiple divergences. Simple single divergences will only require a double
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head absolute mast. Approach masts can be automatic (with number plate) at the end of an
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automatic block section with the requisite number of heads required to display the approach
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aspects.</p>
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<p>See the <a href="aspects.xml">Aspects page</a> for full details of the available masts and
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aspects.</p>
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<p>Searchlight Signal Mast definitions:</p>
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<ul>
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<li>
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<a href="appearance-SL-1A.xml">Single head Absolute searchlight signal</a>
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</li>
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<li>
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<a href="appearance-SL-1L.xml">Single head Permissive searchlight signal</a> (with Lunar
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proceed aspect in place of Green)
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</li>
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<li>
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<a href="appearance-SL-1R.xml">Single head Restricting searchlight signal</a> (with 'G'
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plate)
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</li>
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<li>
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<a href="appearance-SL-1S.xml">Single head Stop and Proceed searchlight signal</a> (with
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number plate)
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</li>
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<li>
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<a href="appearance-SL-1D.xml">Single head Distant searchlight signal</a> (with 'D'
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plate)
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</li>
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</ul>
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<ul>
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<li>
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<a href="appearance-SL-2A.xml">Double head Absolute searchlight signal</a>
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</li>
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<li>
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<a href="appearance-SL-2AA.xml">Double head Absolute searchlight signal (2012 rules)</a>
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</li>
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<li>
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<a href="appearance-SL-2L.xml">Double head Absolute searchlight signal</a> (with Lunar on
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lower head in place of Red)
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</li>
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<li>
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<a href="appearance-SL-2R.xml">Double head Restricting searchlight signal</a> (with 'G'
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plate)
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</li>
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<li>
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<a href="appearance-SL-2S.xml">Double head Stop and Proceed searchlight signal</a> (with
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number plate)
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</li>
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<li>
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<a href="appearance-SL-2SL.xml">Double head Stop and Proceed searchlight signal</a> (with
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number plate and Lunar in place of Red on lower head)
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</li>
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<li>
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<a href="appearance-SL-2D.xml">Double head Distant searchlight signal</a> (with 'D'
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plate)
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</li>
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</ul>
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<ul>
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<li>
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<a href="appearance-SL-3A.xml">Triple head Absolute searchlight signal</a>
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</li>
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<li>
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<a href="appearance-SL-3L2.xml">Triple head searchlight signal</a> (with Lunar in place
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of Green on centre head)
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</li>
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<li>
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<a href="appearance-SL-3L3.xml">Triple head searchlight signal</a> (with Lunar in place
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of Green on lower head)
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</li>
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<li>
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<a href="appearance-SL-3S.xml">Triple head Stop and Proceed searchlight signal</a> (with
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number plate)
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</li>
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</ul>
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<p>Unprototypical Universal Searchlight Signal Mast definitions. The following masts are not
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prototypical because they can show up to four colours on each head, but are handy for modular
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setups where the distant indications are not known until modular layout setup time:</p>
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<ul>
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<li>
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<a href="appearance-SL-3C.xml">Triple head Modular searchlight signal</a>
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</li>
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<li>
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<a href="appearance-SL-2C.xml">Double head Modular searchlight signal</a>
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</li>
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<li>
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<a href="appearance-SL-1C.xml">Single head Modular searchlight signal</a>
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</li>
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</ul>
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